closes #6419

public/src/client/chats.js

@@ -119,9 +119,8 @@ define('forum/chats', [
 
 	Chats.addCharactersLeftHandler = function (parent) {
 		var element = parent.find('[component="chat/input"]');
-		element.on('keyup', function () {
-			parent.find('[component="chat/message/length"]').text(element.val().length);
-			parent.find('[component="chat/message/remaining"]').text(config.maximumChatMessageLength - element.val().length);
+		element.on('change keyup paste', function () {
+			messages.updateRemainingLength(parent);
 		});
 	};
 

public/src/client/chats/messages.js

@@ -18,7 +18,7 @@ define('forum/chats/messages', ['components', 'sounds', 'translator', 'benchpres
 
 		inputEl.val('');
 		inputEl.removeAttr('data-mid');
-
+		messages.updateRemainingLength(inputEl.parent());
 		$(window).trigger('action:chat.sent', {
 			roomId: roomId,
 			message: msg,
@@ -32,6 +32,7 @@ define('forum/chats/messages', ['components', 'sounds', 'translator', 'benchpres
 			}, function (err) {
 				if (err) {
 					inputEl.val(msg);
+					messages.updateRemainingLength(inputEl.parent());
 					if (err.message === '[[error:email-not-confirmed-chat]]') {
 						return app.showEmailConfirmWarning(err);
 					}
@@ -56,12 +57,19 @@ define('forum/chats/messages', ['components', 'sounds', 'translator', 'benchpres
 				if (err) {
 					inputEl.val(msg);
 					inputEl.attr('data-mid', mid);
+					messages.updateRemainingLength(inputEl.parent());
 					return app.alertError(err.message);
 				}
 			});
 		}
 	};
 
+	messages.updateRemainingLength = function (parent) {
+		var element = parent.find('[component="chat/input"]');
+		parent.find('[component="chat/message/length"]').text(element.val().length);
+		parent.find('[component="chat/message/remaining"]').text(config.maximumChatMessageLength - element.val().length);
+	};
+
 	messages.appendChatMessage = function (chatContentEl, data) {
 		var lastSpeaker = parseInt(chatContentEl.find('.chat-message').last().attr('data-uid'), 10);
 		var lasttimestamp = parseInt(chatContentEl.find('.chat-message').last().attr('data-timestamp'), 10);